TWM679296U - Golf clubs and their shafts - Google Patents

Abstract

This invention provides a golf club and its shaft. The golf club, through a movable weight mechanism installed within the shaft and at least one concave ring design on the shaft, provides a strong feedback feel and a shift in the club's center of gravity during the swing. This allows the swinger (even a beginner) to easily feel and adjust their body posture, grip strength, and power release techniques based on the principles of the sport. Furthermore, the at least one concave ring design on the shaft makes the shaft softer near the head, making it easier to adjust the kick point. Adjusting the point to a lower position makes it easier to hit the optimal hitting point during the swing, resulting in a higher ball trajectory and maximizing the hitting distance. This improves body balance control, quick perception, swing technique adjustment, and refinement of hitting skills during the swing.

Description

Golf clubs and their shafts

This invention provides a golf club, specifically a golf club suitable for playing on formal outdoor courses, featuring a low kickpoint shaft and concealed movable weight distribution. This new design provides golfers with improved balance control, quicker awareness, better swing technique adjustment, higher ball trajectory, maximized distance, and enhanced driving technique during the swing.

To better match the user's swing characteristics, such as the ball's flight angle, speed and distance, center of gravity, body balance, and hitting technique, the design of various components of a golf club, including the shaft, clubhead, shaft, grip, and the materials used, has been continuously studied and extensively documented. The design of the center of gravity and weight distribution in golf clubs almost always involves a fixed weight on the clubhead (Republic of China patents I650163, I729440, TW I813456B, TW I817842B). This weight, combined with the different materials used in the shaft and handle of the golf clubs (e.g., alloy or carbon fiber), shifts the center of gravity at the point of impact, resulting in variations in the ball's angle, speed, and distance after impact. This allows golfers to choose a suitable golf club based on their body type and athletic ability.

Besides the aforementioned design feature of fixed weights on the clubhead to alter the center of gravity at impact, golf clubs also incorporate fixed weights on the shaft (Republic of China patents TW M294961 U, TW I742971 B) to change the shaft's center of gravity, adjust the overall balance of the swing, improve swing speed and stability, make the swing smoother, reduce unnecessary hand movements, enhance stability, and mitigate post-impact deviation.

However, the aforementioned traditional center of gravity and weight distribution design, whether placed on the clubhead or shaft of a golf club, is a "fixed" weight distribution. If the weight is too heavy, it will negatively impact swing speed, accuracy, and distance and direction due to excessive weight on the clubhead or shaft, especially affecting the weight distribution on the shaft. Conversely, if the weight is too light, it will not provide sufficient support for the necessary factors in the swing. These two conflicting factors make it difficult to achieve optimal results. In other words, even with weighting the clubhead or shaft, because it's a "fixed" weighting system, if the weight is too light, there's little difference in the feedback force during the swing. Therefore, it's very difficult to feel the feedback force during the swing. For the average golfer, it's hard to feel the feedback, meaning they can't effectively correct their body posture, grip strength, and the techniques for proper power release. Even with years of repeated practice, the feedback force during the swing isn't very noticeable. This understanding of body posture, grip strength control, and power release techniques often becomes a long and arduous process due to poor results.

Given the importance of practicing the posture and coordination between the golf swing and the body in golf, while there is a type of golf practice club with an "external" movable weight, this type of golf practice club, as the name suggests, provides the golfer with opportunities to adjust their body posture and coordination during the swing, and is not suitable for playing on an outdoor formal course. As shown in Figure 7, an external movable weight 72 is installed on one end of the shaft 71 of the practice club 7, and a stop block 73 is installed on the other end of the shaft 71, thereby providing opportunities for practicing the posture and coordination of the swing. However, the shaft 71 of this practice club 7 is not the shaft of a real golf club, and it does not have a clubhead (i.e., a club head). Therefore, it must rely entirely on the weight of the external weight 72 to achieve a weight "similar" to that of a real golf club. Since the weight 72 of this practice club 7 is placed on the outside of the shaft 71, along the outside of the shaft 71 tube... Because of its mobility, the external weight 72 has a considerable volume and weight. This situation causes the swing posture to be correct when using practice clubs, but once you pick up a real golf club and take the course, the entire swing posture goes wrong. The main reason for this is that practice clubs and real golf clubs have completely different specifications and characteristics. Official golf clubs have very light shafts. They have very strict requirements for weight and shaft flex, such as classification based on the degree of shaft flex (L, R, SR, S, X, TX), shaft torque, and shaft kick point. In addition, the main weight of the club is in the head area. The light shaft makes the swing speed fast, the distance long and stable. Therefore, if the shaft weight of a golf club is too heavy, it will affect the swing speed and the accuracy of the shot. It will not only make the swing more strenuous, affecting the distance and direction, but also worsen the body balance control and make the swing force obviously uncontrollable. Therefore, the requirements for the shaft weight of a formal golf club are extremely important. In other words, the practice club shown in Figure 7 differs completely from the specifications of a real golf club in terms of overall weight distribution, flex, torque, and kick point. At best, it provides only practice for swing posture; it offers very limited help in developing swing power, grip strength, and proper power release techniques for actual outdoor golf courses.

Furthermore, since the weight 72 of this type of practice club 7 is placed on the outside of the shaft 71 and moves along the outside of the shaft 71, and the weight and size of the external weight 72 and the stop block 73 are large and expand outwards around the shaft 71, the large protruding size of the weight 72 or the stop block 73 after the swing can easily cause it to accidentally hit the ground or the ball on the ground. Therefore, it is only suitable for practicing posture and movements in practice situations and is not suitable for playing on a formal golf course, since the characteristics are completely different from those of a formal golf club. In addition, the external weight 72 is not fixed in place, and when the practitioner moves around, the weight 72 moves up and down, occasionally causing noise as it hits the stop block 73.

Even when the aforementioned movable "external" weight design of the practice clubs is applied to actual golf clubs, the following flaws still exist:

(1) Due to the excessive weight of the external weights (including weight 72 and stop 73), the shaft weight, shaft flex, shaft torque, and kick point are directly affected, impacting crucial characteristics such as shaft torque and kick point. This results in a golf club that is not only difficult to swing and has poor balance control, but also directly affects swing speed, accuracy, and swing power control, thus having the opposite effect.

(2) Due to the large size of the external weights (including weight 72 and stop 73), which extend outwards around the golf club shaft, the large protrusion of weight 72 and stop 73 after the swing can easily cause them to accidentally hit the ground or the small white ball on the ground.

(3) Due to the "external" design of the weight 72, it moves rapidly up and down along the shaft of the golf club. Over time, the golf club shaft is prone to damage. Furthermore, when the player is walking and holding the practice club, the external weight 72, lacking a fixed position, moves up and down, causing occasional noise from impacting the stop block 73.

(4) Due to the external 72mm weight, the overall appearance of the golf club is affected, appearing awkward and unsightly, completely deviating from the light and elegant feel of typical long, round-tube golf clubs.

Furthermore, golf club shafts are designed with the maximum kick point in mind during the swing. Different kick points can alter the ball's trajectory, flight time, launch angle, spin rate, distance, and feel at impact. Therefore, shafts are designed with different high, medium, or low kick points. A high kick point is closer to the grip, while a low kick point is closer to the clubhead. Generally, a low kick point results in a higher trajectory after impact, making the ball easier to lift and increasing flight time and launch angle. A higher launch angle (or lower spin rate) provides lift to the ball after the swing, extending its time in the air. For most golfers, a higher trajectory helps maximize distance and makes the ball fly higher, making it ideal for beginners or players with slower swing speeds. This helps them compensate for a lack of power, allowing the ball to fly further, and it's also suitable for players seeking a comfortable feel. Conversely, a higher kick point, closer to the grip, results in a lower launch angle, lower spin rate, and is suitable for players with faster swing speeds. Therefore, golfers should choose high, medium, or low kickpoint golf clubs based on their swing power and speed to find the right clubs for them, allowing them to more easily hit the optimal impact point during their swing.

However, while current golf club shafts can vary their kickpoint design by different weight distributions or fiber layering arrangements based on material properties, these conventional techniques have reached a design bottleneck in the current trend towards lighter shafts. Providing even lower kickpoints to make the swing easier and compensate for power deficiencies remains a challenge, offering golfers (especially beginners and older players) more choices.

In light of the above, the creator of this work developed it based on years of experience in related electrical, mechanical, and industrial design.

The purpose of this invention is to provide a golf club and its shaft suitable for playing on formal outdoor courses. Through a movable weight mechanism installed within the shaft of the formal golf club, the centrifugal force generated during a high-speed swing drives the weight within this mechanism to move instantaneously and at high speed along the inside of the shaft towards the clubhead. This causes the weight to violently impact the clubhead, generating a high-speed impact force that provides feedback in terms of feel and shifts the club's center of gravity. This strong feedback... Even with a very light weight, the feel and weight shift of the shaft are easily felt by the swinger (even a beginner). This allows for timely adjustments to body posture, grip control, and power release techniques, achieving improvements in balance control, quick reflexes, swing technique adjustment, and overall shot refinement. Unlike existing golf practice clubs, which are primarily for posture practice and not suitable for outdoor golf courses, these clubs offer a more refined experience.

Another objective of this creation is to address the common frustration of users who, despite having correct form when using practice clubs, find their swing completely off when playing on a proper golf course. This golf club seamlessly integrates the principles of golf swing practice with practical application on the course. Users can directly experience the impact force of high-speed collisions and the shift in the club's center of gravity, adjusting their body posture, grip control, and power release techniques. This ultimately improves balance control, cognitive abilities, swing technique, and overall shot refinement.

Another objective of this design is to provide a shaft structure with a low kickpoint, giving golfers further options. In other words, after selecting a golf club with a shaft stiffness suitable for their swing, the low kickpoint design of this new design allows for a softer shaft near the head, making it easier to adjust the kickpoint to a lower position. This makes it easier to hit the optimal impact point during the swing, generating a higher trajectory, making the ball more airborne, increasing flight time, launch angle, and spin. The ball's lift (rate) provides lift after the swing, extending its time in the air. This is especially beneficial for beginners or slower swingers who want a higher trajectory and maximum distance, helping them compensate for a lack of power and allowing the ball to fly further, while also providing a comfortable feel.

To achieve the above objectives, this invention features a golf club with a low kick point and concealed movable weight. The golf club shaft comprises a main body and a movable weight mechanism housed within the main body. The main body is a hollow, elongated tube with two ends. The movable weight mechanism includes a magnet, a metal weight, and a stopper. The magnet is fixed between the handle and the clubhead. The metal weight is magnetically attracted to the magnet. Above; the stop assembly is fixed within the main body and positioned between the handle and the clubhead of the golf club; with the above structure, both ends of the main body are respectively connected to the handle and the clubhead of the golf club, or an adapter connector is assembled together behind the clubhead. Once on the course, before swinging, the player holds the handle and aligns the clubhead with the ball on the ground, and begins to raise the shaft to the optimal position for impact. The metal weight is magnetically attached to the magnetic body. Upon swinging, utilizing the high-speed centrifugal force generated by the downward, rapid impact, the metal weight is quickly thrown off and moves at high speed along the inside of the shaft towards the clubhead, violently striking the stop. This instantaneous high-speed impact force provides feedback to the feel and shifts the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even a very light weight can be very effective. The club shaft provides easy feedback upon impact, helping to adjust body posture, grip strength, and power release techniques—principles essential for accurate ball striking at the optimal point. Furthermore, the metal weights are magnetically attached to a fixed magnet, eliminating noise from movement and impacts even while walking.

Based on the above, the magnetic material is a hard magnet. The metal counterweight is a magnetic material that can be attracted by the hard magnet.

Based on the above, the magnetic material is made of iron (Fe), ferroalloys, steel, alloy steel, carbon steel, stainless steel, nickel (Ni), cobalt (Co), etc., and its weight is adjusted to match the weight of the shaft.

Based on the above, the blocking element can be a cushioning material; or a material of the same material as the metal counterweight, or a material of comparable hardness to the metal counterweight.

Based on the above, the buffer material of the stop can be either foam or a compression spring.

This creation features a golf club with a low kick point and concealed movable weight distribution. Another characteristic is the presence of at least one concave ring on the shaft near the clubhead. This concave ring design makes the shaft softer near the clubhead, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the optimal impact point during the swing, generating a higher trajectory, making the ball more likely to take off, increasing flight time, launch angle, and spin. (Rate), which provides lift to the ball after the swing, extending its time in the air and maximizing the hitting distance.

1: Golf clubs

2,2’,2”: Golf club shaft

3: Handle

4,4’,4”: The head of the iron bar

5,5’,5”: The head of the wooden pole

6’: Adapter connector

20,20’,20”: Body

21,21’,21”: Mobile counterweight mechanism

22, 22’, 22”: Wavy concave ring

201: One end of the entity

202: The Other End of the Body

211,211’,211”: Magnetic body

212,212’,212”: Metal counterweight

213: Damper

213’: Compression Spring

41”: Inner wall of the iron bar head

51”: The inner wall of the pole head of the wooden pole

61’: Inner wall

Figure 1 is a three-dimensional sectional view of the shaft of a first embodiment of a golf club with a low kick point and concealed movable weights, showing the movable weight mechanism within the shaft.

Figures 2 and 3 are three-dimensional views of the golf club shaft and handle, and the clubheads of the irons and woods, respectively, of the creation shown in Figure 1, featuring a low kick point and concealed movable weight.

Figures 4A and 4B are perspective sectional views of the shaft, adapter connector, and iron head assembly of the second embodiment of the golf club with a low kick point and concealed movable weight, and the shaft, adapter connector, and driver head assembly, respectively, showing the movable weight mechanism within the shaft.

Figures 5A and 5B are perspective views of the shaft and iron head assembly, and the shaft and wood head assembly, of the third embodiment of this golf club with a low kick point and concealed movable weight.

Figure 6 is a partial cross-sectional view of the shaft of the fourth embodiment of the golf club with a low kick point and concealed movable weight, showing the movable weight mechanism within the shaft.

Figure 7 is a plan view of an existing golf practice club and its movable "external" weight.

Please refer to Figure 1, which is a three-dimensional cross-sectional view of the shaft of the first embodiment of the golf club with a low kick point and concealed movable weight. As shown in the figure, the shaft 2 of the golf club is suitable for playing golf on an outdoor formal course. The shaft 2 includes: a body 20 and a movable weight mechanism 21. The body 20 is a hollow elongated tube with a low kick point. The movable counterweight mechanism 21 includes a magnetic body 211, a metal counterweight 212, and a stop body 213. The magnetic body 211 is fixed inside the long cylindrical hollow body of the main body 20. The position of the stop body 213 is between the handle 3 and the handle 3 (in this embodiment, it is set in the side 201 close to the handle 3). It is a hard magnet and is fixed to the main body 20 by means of a fixture. The metal weight 212 is magnetically attracted to the magnetic body 211. It is a magnetic material that can be attracted by the hard magnet. Its weight is adjusted relative to the weight of the shaft 2. For example, it is made of materials such as iron (Fe), ferroalloys, steel, alloy steel, carbon steel, stainless steel, nickel (Ni), and cobalt (Co). The weight of the metal weight 212 is less than 20 grams, preferably less than 10 grams. That is, when the club is not being swung, it is attracted and positioned on the magnetic body 211. When the club is swung, it is quickly thrown out and moved along the tube of the shaft 2. The stop body 213 is fixed within the body 20, located between the handle 3 and the handle head 4, 5 (as shown in Figures 2 and 3). It is made of the same material as the metal counterweight 212 or a material of comparable hardness, and is integrally fixed to the body 20 via a fixture assembly.

Additionally, the shaft 2 has a wavy concave ring 22 along its longitudinal cross-section. This wavy concave ring 22 is located at the end of the shaft 2 near the clubhead 4,5. This design makes the section of the shaft 2 near the clubhead 4,5 softer, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the ball at the optimal impact point during the swing, generating a higher trajectory and increasing flight time, launch angle, and backspin. (Rate), which provides lift to the ball after the swing, extending its time in the air and maximizing the hitting distance.

Therefore, this invention, through the movable counterweight mechanism 21, can provide a strong feedback feel and shaft center of gravity shift even with a very light counterweight setting, allowing the swinger (even a beginner) to very easily feel and adjust their body posture, grip strength control, and techniques for properly releasing power during the swing, etc. Furthermore, the wave-shaped concave ring 22 design makes the shaft 2, near the clubhead sections 4 and 5, more flexible, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the optimal impact point during the swing, resulting in a higher ball trajectory and maximizing distance. This benefits balance control, quick reflexes, swing technique adjustments, and overall improvement in shot technique.

Please refer to Figures 2 and 3 for a three-dimensional view of the aforementioned golf club 1, showing the shaft 2, handle 3, clubhead 4 for irons, and clubhead 5 for woods. Referring to Figure 1, when swinging to hit the ball, before gripping the handle 3, the player aligns the clubhead 4 (5) with the ball on the ground and begins to raise the shaft 2 to the optimal hitting position. At this time, the metal weight 212 is magnetically attracted to the magnetic body 211. Once the swing occurs, utilizing the high-speed centrifugal force generated by the downward, rapid swing, the metal weight 212 is quickly thrown off and moves at high speed along the inside of the shaft 2 towards the clubhead 4 (5). The impact force generated by the violent collision with the block 213 creates a high-speed impact feedback and a shift in the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even with a very light weight, we can easily feel the feedback from the shaft upon impact. This helps us adjust our body posture during the swing, control our grip on the handle, and learn how to properly release power, thus enabling us to accurately hit the ball at the optimal point of impact. During the swing, the wave-shaped concave ring 22 design makes the shaft 2, near the clubhead sections 4 and 5, softer, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the optimal impact point and generates a higher trajectory, making the ball more likely to take off, increasing flight time, launch angle, and spin rate. This provides lift to the ball after the swing, extending its time in the air and maximizing the hitting distance.

Please refer to Figures 4A and 4B for examples of this creation with a low kick. A three-dimensional cross-sectional view of the shaft 2' of a golf club with a point and concealed movable counterweight, connected to the adapter connector 6', is shown in the figure. The second embodiment of the main body 20' also contains the magnetic body 211' and metal counterweight 212' of the movable counterweight mechanism 21' in the first embodiment, but the stop body 213 in the first embodiment is omitted. That is, the shaft 2' is directly glued to the adapter connector 6', and after gluing, it is then glued to the clubhead 4' of an iron club (as shown by the dotted line in Figure 4A) or the clubhead 5' of a wood club (as shown by the dotted line in Figure 4B). The adapter connector 6' has an inner wall 61', which allows for easy connection during a swing. The club utilizes the high-speed centrifugal force generated by the downward, rapid swing to strike the ball. The metal weight 212' is quickly thrown off and moves at high speed along the inside of the shaft 2' towards the adapter 6', violently impacting the inner wall 61'. This provides a feedback feel of the high-speed impact and a shift in the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even with a very light weight, we can easily feel the feedback of the shaft during impact. This helps to adjust body posture, grip strength, and techniques for releasing power appropriately during the swing, thus enabling us to accurately hit the ball at the optimal point of impact. During the swing, the 22' wave-shaped concave ring design makes the 2' section of the shaft near the 4' and 5' sections of the clubhead softer. This makes it easier to adjust the kick point to a lower position, allowing for easier hitting of the optimal impact point and generating a higher trajectory. This makes the ball more likely to take off, increasing flight time, launch angle, and spin rate, thus providing lift after the swing and extending the ball's hover time to maximize distance.

Furthermore, please refer to Figures 5A and 5B, which are three-dimensional views of the shaft 2” of the golf club with a low kick point and concealed movable weight, connected to the clubhead 4” of an iron or the clubhead 5” of a wood, in the third embodiment of this invention. As shown in the figures, the body 20” of the third embodiment also contains the magnetic body 211” and the metal weight 212” of the movable weight mechanism 21” in the first embodiment, but the magnetic body 211” and the metal weight 212” are omitted. In the first embodiment, the stop 213, that is, the shaft 2”, is directly and integrally fixed to the clubhead 4 (as shown in Figure 5A) of the iron club or the clubhead 5 (as shown in Figure 5B) by adhesive bonding. The inner wall 41” (51”) of the iron club head 4” (or the clubhead 5”) is located inside the shaft. Once the club is swung, the downward movement… The principle of high-speed centrifugal force generated by a fast swing causes the metal weight 212” to be quickly thrown away and move at high speed along the inside of the shaft 2” towards the clubhead 4” (5”) and violently impact the inner wall 41” (51”) of the clubhead 4” (5”). This provides a feedback feel of high-speed impact and a shift in the center of gravity of the shaft. Through this strong feedback feel and shift in the center of gravity of the shaft, even with a very light weight, we can easily feel the feedback of the shaft at impact. This can help us adjust our body posture, grip strength, and techniques for releasing power properly during the swing, thereby enabling us to hit the ball correctly and reach the optimal point of impact. During the swing, the 22” wave-shaped concave design makes the 2” shaft section near the 4” and 5” head structure softer, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the optimal impact point and generates a higher trajectory, making the ball more likely to take off, increasing flight time, launch angle, and spin rate. This provides lift to the ball after the swing, extending its time in the air and maximizing hitting distance.

Please refer to Figure 6, which is a three-dimensional cross-sectional view of the shaft of the fourth embodiment of the golf club with a low kick point and concealed movable weight. As shown in the figure, the difference between this embodiment and the first embodiment is that the stop is not made of the same material as the metal weight 212 or of a similar hardness. Instead, it uses a cushioning material, such as foam or a compression spring (compression spring 213' in this embodiment). Thus, during the swing, the high impact feedback provided by the metal weight 212 and the smaller shift in the club's center of gravity are still provided, while still offering a good feel for the impact point, allowing for control over the trajectory of the ball.

In summary, this golf club, featuring a low kick point and concealed movable weight, truly achieves its purpose: providing users with a tool for practicing swing posture and techniques while also being usable on outdoor golf courses. This is distinct from existing fixed-weight golf clubs and "external" weighted practice clubs unsuitable for outdoor play. Specifically, the concealed movable weight of this golf club is located inside the shaft tube. Furthermore, the shaft boasts standard dimensions, weight, flex rating, and torque rating, and the kick point... Shafts manufactured to meet important specifications such as the point rating allow for smaller and lighter weights (or stoppers). In contrast, existing "external" weights, located on the outside of the shaft, have a considerable volume and weight, making them unsuitable for the requirements of formal golf clubs regarding shaft weight, flex, torque, and kick point. Furthermore, their appearance is jarring and fails to meet the elegant design and performance specifications of formal golf club shafts, rendering them unsuitable for outdoor use. Furthermore, the wave-shaped concave ring design makes the shaft softer near the head, making it easier to adjust the kick point to a lower position. This allows for easier hitting of the optimal impact point during the swing, resulting in a higher trajectory and maximizing distance. Therefore, this design features a low kick point. Golf clubs featuring a hidden movable weight distribution (Kick Point) provide strong feedback and shaft weight shift even with a light weight setting. This allows swingers (even beginners) to easily feel and adjust their body posture, grip strength, and power release techniques. Furthermore, the wave-shaped concave ring 22 design makes the shaft softer near the head, facilitating the kick point adjustment. The point is adjusted to a lower position, making it easier to hit the optimal impact point during the swing, resulting in a higher trajectory and maximizing distance. This improves body balance control, quick perception, swing technique adjustment, and overall shot refinement, thus meeting the requirements of an invention patent.

In summary, the embodiments described are merely preferred embodiments of this invention. Any modifications and variations based on this invention, such as fixing the magnetic assembly in a position other than that described in the foregoing embodiments to accommodate the metal weight, still fall within the spirit of this invention's patent for a movable weight mechanism concealed within a golf club (including the shaft, handle, and clubhead). All equivalent variations should be included within the scope of this patent application.

2: Golf club shaft

20: The Body

21: Mobile counterweight mechanism

22: Wavy concave ring

201: One end of the entity

202: The Other End of the Body

211: Magnetic material

212: Metal counterweight

213: Damper

Claims (20)

A golf club suitable for use on formal outdoor golf courses, the golf club having a low kick point and concealed movable weight, the golf club comprising at least: a shaft, a grip, and a clubhead, characterized in that: the shaft comprises: a single body having a low kick point. The club body comprises a point and a movable counterweight mechanism installed within the main body. The main body is a hollow elongated tube with two ends, one end connected to the handle and the other end connected to the clubhead. The movable counterweight mechanism includes at least a magnetic body and a metal counterweight. The magnetic body is fixed between the handle and the clubhead. The metal counterweight is magnetically attracted to the magnetic body. At least one recess is provided on the end of the shaft near the clubhead. Using these technical features, before swinging, the user holds the handle, aligns the clubhead with the ball, and begins to raise the shaft to the optimal hitting position. At this time, the metal counterweight is magnetically attracted to the magnetic body. Once the swing begins, the metal counterweight is attracted to the magnetic body. The high-speed centrifugal force generated by a fast swing causes the metal weight to be rapidly thrown off and move along the inside of the shaft towards the clubhead, violently impacting the inner wall of the clubhead. This impact force provides feedback and shifts the shaft's center of gravity. This strong feedback and shift in the shaft's center of gravity are easily felt, allowing for timely adjustments to body posture, grip strength, and the proper release of power—principles of the sport—to accurately hit the ball at the optimal striking point. Furthermore, the design of at least one concave ring on the shaft makes the shaft softer near the clubhead, making it easier to achieve the kick point. Adjusting the point to a lower position makes it easier to hit the optimal hitting point during the swing, generating a higher trajectory. This makes the ball easier to lift off the ground, increasing flight time, launch angle, and spin rate. It also provides the ball with lift after the swing, extending its time in the air and maximizing the hitting distance. As described in claim 1, the golf club's movable weight mechanism further includes a stopper assembly fixed within the club body and positioned between the handle and the clubhead. When the club is swung on the course, utilizing the high-speed centrifugal force generated by the downward, rapid swing, the metal weight is quickly thrown off and moves at high speed along the shaft towards the clubhead, violently impacting the stopper and instantly generating a high-speed impact. The impact force feedback and the shift in the shaft's center of gravity provide a strong feedback feel. Even with a very light weight, we can easily feel the shaft's feedback upon impact. This helps us adjust our swing posture, grip strength, and techniques for releasing power appropriately, ultimately enabling us to hit the ball at the optimal point of contact. The golf club as described in claim 1 further includes a connecting joint, one end of which is assembled to the other end of the body opposite the handle, and the other end of which is connected to the clubhead. The connecting joint has an inner wall. When the club is swung on the course, utilizing the high-speed centrifugal force generated by the downward, rapid swing, the metal weight is quickly thrown off and moves at high speed along the inside of the shaft towards the connecting joint, violently impacting it. The inner wall of the adapter instantly generates a high-speed impact force feedback and a shift in the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even with a very light weight, we can easily feel the shaft's feedback upon impact. This helps us adjust our body posture during the swing, control our grip on the handle, and learn how to properly release power, thus enabling us to accurately hit the ball at the optimal point of impact. As described in claim 1, the golf club further includes a stopper body in the movable weight mechanism; the golf club further includes a connecting connector with an inner wall, one end of which is assembled to the other end of the body opposite the handle, and the other end of which is connected to the clubhead; the stopper body is fixed inside the body and positioned between the handle and the connecting connector; when the club is swung on the course, the high-speed centrifugal force generated by the downward rapid swing causes the metal weight to be quickly thrown off and... Moving at high speed along the inside of the shaft towards the head and violently impacting the block, the impact force instantly generates a high-speed feedback feel and shifts the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even with a very light weight, we can easily feel the shaft's feedback upon impact. This helps us adjust our body posture during the swing, control our grip on the handle, and learn how to properly release power, thus enabling us to accurately hit the ball at the optimal point of impact. The golf club as described in claim 1, 2, 3 or 4, wherein the magnetic body is a hard magnet and is integrally fixed to the body by a jig assembly. As described in claim 5, the golf club has a metal weight that is a magnetic material attracted by the hard magnet. The magnetic material is made of materials such as iron (Fe), ferroalloys, steel, alloy steel, carbon steel, stainless steel, nickel (Ni), and cobalt (Co). Its weight is adjusted relative to the weight of the shaft, and its shape can be spherical, cylindrical, conical, elliptical, elongated, polygonal, etc. Golf clubs as described in claims 1, 2, 3 or 4, wherein the weight of the metal weight is less than 20 grams; preferably less than 10 grams. As described in claim 2 or 4, the stopper may be a cushioning material; or a material of the same or similar hardness as the metal weight, and is integrally fixed to the body via a fixture assembly. A golf club as described in any of claims 1 to 4, wherein the at least one concave ring is a wavy concave ring along a longitudinal section of the body. A golf club shaft, assembled with the handle and head of a golf club, is suitable for use on formal outdoor golf courses. Its features include: the shaft comprising: a body and a movable weight mechanism assembled within the body; the body is a hollow, elongated tube with two ends; the movable weight mechanism includes a magnet, a metal weight, and a stopper; the magnet is fixed... The metal weight is magnetically attached to the magnetic body between the stopper and the golf club handle. The stopper assembly is fixed within the main body and positioned between the golf club handle and the clubhead. With these technical features, both ends of the shaft are respectively connected to the golf club handle and clubhead, or an adapter connector is assembled together behind the clubhead. When playing on the course, the user grips the handle... Before swinging, align the clubhead with the small white ball on the ground and begin raising the shaft to the optimal hitting position. At this point, the metal weight is magnetically attracted to the magnetic body. Upon swinging, utilizing the high-speed centrifugal force generated by the downward, rapid impact, the metal weight is quickly thrown off and moves at high speed along the inside of the shaft towards the clubhead, violently colliding with the stopper in a high-speed impact. The strong feedback and shift in the shaft's center of gravity allow us to easily feel the shaft's feedback upon impact, even with a very light weight. This feedback helps us adjust our swing posture, grip strength, and techniques for releasing power appropriately, ultimately enabling us to hit the ball at the optimal point of contact. The golf club shaft as described in claim 10, wherein the magnetic material is a hard magnet and is integrally fixed to the body via a fixture assembly. As described in claim 11, the golf club shaft has a metal weight that is a magnetic material attracted by the hard magnet. The magnetic material is made of materials such as iron (Fe), ferroalloys, steel, alloy steel, carbon steel, stainless steel, nickel (Ni), and cobalt (Co). Its weight is adjusted to match the weight of the shaft, and its shape can be spherical, cylindrical, conical, elliptical, elongated, polygonal, etc. The shaft of a golf club as described in claim 10, wherein the weight of the metal weight is less than 20 grams; preferably less than 10 grams. The golf club shaft as described in claim 10, wherein the stopper may be a cushioning material; or a material of the same or similar hardness as the metal weight, and is integrally fixed to the body by a fixture assembly. A golf club shaft, assembled with the handle, adapter, and clubhead of a golf club, is suitable for use on formal outdoor golf courses. Its features include: a shaft comprising a body and a movable weight mechanism installed within the body; the body is a hollow, elongated tube with two ends; the movable weight mechanism includes a magnet and a metal weight, the magnet being fixed to the golf club shaft. Between the handle and the adapter connector; the metal weight is magnetically attracted to the magnet; with the above technical features, after the two ends of the shaft are respectively connected to the handle, adapter connector and clubhead of the golf club, once on the course, before we hold the handle and prepare to swing, we align the clubhead with the white ball on the ground and begin to lift the shaft to the optimal position for the swing. At this time, the metal weight is magnetically attracted to the magnet. Physically, once the club is swung, utilizing the high-speed centrifugal force generated by the downward, rapid swing, the metal weight is quickly thrown off and moves at high speed along the inside of the shaft towards the clubhead, violently impacting the inner wall of the adapter connector. This instantaneous high-speed impact force provides feedback to the feel and shifts the shaft's center of gravity. Through this strong feedback and shift in the shaft's center of gravity, even with a very light weight, we can easily feel the impact. The shaft provides excellent feedback and helps adjust body posture, grip strength, and power release techniques during the swing, thus ensuring accurate ball contact at the optimal point of impact. Similarly, the shaft is only assembled with the handle and clubhead at each end, without the adapter connector. In this case, the metal weight directly and violently impacts the inner wall of the clubhead after the swing. The golf club shaft as described in claim 15, wherein the magnetic material is a hard magnet and is integrally fixed to the body via a fixture assembly. As described in claim 16, the golf club shaft has a metal weight that is a magnetic material attracted by the hard magnet. The magnetic material is made of materials such as iron (Fe), ferroalloys, steel, alloy steel, carbon steel, stainless steel, nickel (Ni), and cobalt (Co). Its weight is adjusted to match the weight of the shaft, and its shape can be spherical, cylindrical, conical, elliptical, elongated, polygonal, etc. The golf club shaft as described in claim 15, wherein the weight of the metal weight is less than 20 grams; preferably less than 10 grams. A golf club shaft, assembled with the handle and head of a golf club, is suitable for use on formal outdoor golf courses. The shaft includes: a body having a low kick point, characterized in that: the end of the shaft body near the clubhead has at least one recess; after the two ends of the shaft body are respectively connected to the handle and head of the golf club, once on a course, the design of at least one recess on the shaft body makes the structure near the clubhead section of the shaft more flexible, making it easier to achieve the kick point. The point is adjusted to a lower position, making it easier to hit the optimal hitting point during the swing and generating a higher trajectory, making the ball easier to take off, increasing flight time, launch angle, and spin rate. This provides the ball with lift after the swing, prolonging its time in the air and maximizing the hitting distance. Similarly, the shaft body is not only assembled with the handle and clubhead at both ends, but also has an adapter connector assembled at the clubhead end. The shaft body also maximizes the hitting distance through at least one concave ring design. The golf club shaft as described in claim 19, wherein the at least one concave ring is a wavy concave ring along the longitudinal section of the body.